My configuration is:
In ground Pool.
1 Sand Filter
1 Heater (gas)
2 return lines and 1 main drain line.
I use a gizmo that I put into the skimmer and attach the compresser to the gizmo in order to blow out my lines.
I plug the return jet that is the farther away and leave the other one unplugged.
I have a 6 way valve on my sand filter.
I leave plugs in the cleaner, pump and filter and heater.
I leave the 3 way valve set on full skim because the main drain water will seek the same level as the water in the pool.
At this point I am not undoing any of the unions in any of the fixture plumbing.
Question: Do I drain the water out of the filter and then reinstall the drain plug before I start blowing out the water in the
lines or do I drain the water out of the Filter, heater, and pump first and then reinstall the plugs before I start blowing
through the gizmo?
This has always been hard for me to figure out. I did it one way one time and had to put water back into the filter etc.
I live in NW Georgia and cover my pool with a solid loop lock cover so I do not drain the water down as I was told that it was not necessary if you were using this type cover.
Will this method blow all the water out of the